7963
Artikel / Werk in Sammelausg.
A Theory of the Variation of the Magnetical Compass.
Halley, E.: "Magnetical compass." 1683.
Halley, Edmond
1683
9x1
Philosophical Transactions.|||Giving Some Account Of The Present Undertakings, Studies, and Labours Of The Ingenious, In Many Considerable Parts of the World. ()